In the dim light it looked as if he were seated at the piano, but there was no stool!
The Man Who Could Not Shudder
He Courted Death At A Weekend Party
The Case of the Black Orchids
The Red Tassel
Catherine and A Time for Love
A Fighting Man Of Mars (1964)
Swords Of Mars (1963)
Swords Of Mars (1973)
Synthetic Men Of Mars (1973)
Synthetic Men Of Mars (1969)
Llana of Gathol (1965)
The Only Girl In The Game
The Package Deal
The Empty Trap
The Deadly Game
When gems are precious — and life is cheap